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  • Injuneer's Avatar
    Yesterday, 11:41 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    He already swapped out the coil. But maybe the new one is defective. Can't remember if I already posted this: ...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-20-2020, 02:47 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Still not clear in my mind.... guess old age is taking it's toll. When you had the Opti off, and spun it, you got the 5V DC pulse at the Opti...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-20-2020, 01:10 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Are you saying that when you reinstalled the Opti, and tested for AC voltage on the white wire to pin B, there was no reading? If the ICM is not...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-19-2020, 08:17 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Did you measure the AC voltage on the white wire to pin B of the ICM connector, as suggested in previous post?
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-15-2020, 11:11 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Turn it SLOWLY. The low res circuit will produce 8 pulse for one revolution of the Opti. There are 4 varying space longer pulses, alternating with...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-13-2020, 11:21 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    You will have to run a ground wire from the Opti case to the block.
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-13-2020, 07:46 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Shoebox’s procedure emphasizes the D pin resistance is measured key OFF. Follow up with the measurements at the ICM. The 1-4 volts AC on the...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-12-2020, 12:48 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    If you have a STOCK setup, when you put the key in the lock cylinder, and they key has the correct resistance, the theft deterrent module (TDM)...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-12-2020, 10:35 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    If it cranks the engine when you turn the key to “start” it’s done right.
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-12-2020, 09:48 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Ask Moe to confirm he deleted it. But if the PCM isn’t setting DTC 46 and you don’t have a TDM in the circuit, it sounds like it's been programmed...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-12-2020, 09:09 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    The 94/95 F-Body LT1 control does not have the low oil pressure interlock. The Corvette LT1 does. What is the VATS issue? The PCM is looking for...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-11-2020, 09:36 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    The PCM has 4 ground terminals. Two of them (A2, C32) have black/white wires that connect to the same large splice, where it joins grounds from: -...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-11-2020, 10:00 AM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    See Shoebox’s photo of 94/95 harness. The black PCM ground has an eyelet to attach to the block as described above. It is bundled with the wire for...
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-10-2020, 10:10 PM
    Injuneer replied to a thread Pcm ground in Tuning and PCM
    Remind us.... what year is the PCM and harness?
    39 replies | 435 view(s)
  • Injuneer's Avatar
    02-08-2020, 07:04 PM
    The tach is driven based on the low resolution pulse from the Opti. The tach should move up 200-300 RPM while the engine is cranking. No scanner?...
    4 replies | 167 view(s)
  • Injuneer's Avatar
    02-04-2020, 10:07 AM
    He indicates he is using the 94 Caprice PCM. Shoebox has a detailed, labeled photo of a 95 F-Body harness. Doubt the Caprice is the same, but...
    4 replies | 155 view(s)
  • Injuneer's Avatar
    02-04-2020, 10:02 AM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    Was it indicating closed loop? If the PCM has lost power (battery disconnect) the LTFT's reset to 128, and stay there until it goes into closed...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    02-03-2020, 10:58 PM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    As a result, is the engine running better? For future reference: http://shbox.com/1/4th_gen_tech2.html#ect Odd you had no SES light...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    02-03-2020, 11:13 AM
    That circuit starts at the battery, passes through a fusible link, then through fuse #4 (10 amp) in the dash fuse panel, then through connector C210...
    2 replies | 74 view(s)
  • Injuneer's Avatar
    02-02-2020, 04:33 PM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    93 and 94 factory F-Body Opti's were unvented. Had problems with corrosion due to ozone generated by the high voltage discharge inside the sealed...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    01-31-2020, 05:00 PM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    There are codes that don't turn on the SES light.... e.g. DTC 16 for loss of the Opti low resolution signal. There are no OBD-1 codes that cause the...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    01-30-2020, 08:24 PM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    I find Scan9495 to be the most useful. Plus the author is a member here. Doesn’t come around much, but if you have install and setup problems, I...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    01-30-2020, 06:16 PM
    Injuneer replied to a thread lt1 is killing me in LTx Engine Tech
    eBay Opti's can be crap right out of the box. Without scanning it, just a lot of guessing. Is the SES light on? What software do you plan to...
    24 replies | 634 view(s)
  • Injuneer's Avatar
    01-28-2020, 01:13 PM
    315 tire, 25.6" OD, with 7.93" backspace:
    5 replies | 315 view(s)
  • Injuneer's Avatar
    01-24-2020, 09:35 AM
    Injuneer replied to a thread steam line in LTx Engine Tech
    Simply bypassing the throttle body will work on a 95-97, if you have a connection on the radiator, because the steam pipe flow is routed through the...
    8 replies | 227 view(s)
  • Injuneer's Avatar
    01-23-2020, 01:40 PM
    Injuneer replied to a thread steam line in LTx Engine Tech
    Here's the 94 heater hose diagram which shows the fitting on the left. In the stock 94 system, that hose is the return line from the heater to the...
    8 replies | 227 view(s)
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  1. Will do. Not sure if my response got "Sent"... I'll be there at 7:00pm. My cell is 732-894-0442
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    Call or text me anytime tommorrow anytime. 732-547-3245
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    Does tues night at 7pm at Champs in the Menlo Mall work for you?
  4. Let me know when.
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    I will set this up for 1 day next week. I just have to make sure my wife will be home to take care of my son.
  6. I'm ready.... just about any evening after 6:00pm, or a Saturday or Sunday. I can give George the CD of all his 30th SS photos that he asked me for about 3 years ago.

    Still working for Earle, and they are slave drivers...... 11 hours a day during the week, and a 1/2-day most Saturdays. I have no time for anything. Maybe one of you would enjoy owning a 94 Formula.
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    Hey i talked to George today and he said that he would like to get together for some bugers and beers like old times. So Basically when is a good time for you? Im just about always available.
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About Injuneer

Basic Information

About Injuneer
Biography:
Card carrying member - NHRA and AARP
Location:
Central NJ
Vehicle:
1994 Formula
Occupation:
Licensed Professional Engineer (Mechanical)

Signature



94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams solid roller / TH400+GearVendors OD / 4.11's/Strange 12-bolt / 300-shot (dry) N2O / Spohn Suspension / 6-pt roll bar /AutoMeter instrumentation / MoTeC M48 Pro engine management system /a few other odds 'n ends.

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